Mercurial > hg > graal-jvmci-8

annotate graal/Runtime/src/com/sun/hotspot/c1x/HotSpotField.java @ 2492:4e5515d09314

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Fixed merge issues. - Accessing static fields from the java.lang.Class object instead of the klassOop (1-line-change) - Fixed issue with RiField object caching (the caching was only taking the offset as a field ID, but need to take offset+is_static)
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Fri, 22 Apr 2011 19:00:07 +0200
parents 099e697d8934
children
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1 /*
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2 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved.
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3 *
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4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product
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5 * that is described in this document. In particular, and without limitation, these intellectual property
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6 * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or
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7 * more additional patents or pending patent applications in the U.S. and in other countries.
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8 *
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9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun
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10 * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its
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11 * supplements.
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12 *
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13 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or
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14 * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks
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15 * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the
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16 * U.S. and other countries.
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17 *
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18 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open
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19 * Company, Ltd.
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20 */
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21
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22 package com.sun.hotspot.c1x;
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23
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24 import java.lang.reflect.*;
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25
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26 import com.sun.c1x.*;
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27 import com.sun.c1x.debug.*;
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28 import com.sun.cri.ci.CiConstant;
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29 import com.sun.cri.ci.CiKind;
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30 import com.sun.cri.ri.RiField;
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31 import com.sun.cri.ri.RiType;
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32
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33 /**
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34 * Represents a field in a HotSpot type.
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35 *
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36 * @author Thomas Wuerthinger, Lukas Stadler
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37 */
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38 public class HotSpotField extends CompilerObject implements RiField {
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39
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40 private final RiType holder;
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41 private final String name;
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42 private final RiType type;
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43 private final int offset;
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44 private final int accessFlags;
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45 private CiConstant constant;
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46
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47 public HotSpotField(Compiler compiler, RiType holder, String name, RiType type, int offset, int accessFlags) {
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48 super(compiler);
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49 this.holder = holder;
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50 this.name = name;
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51 this.type = type;
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52 this.offset = offset;
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53 this.accessFlags = accessFlags;
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54 }
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55
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56 @Override
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57 public int accessFlags() {
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58 return accessFlags;
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59 }
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60
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61 @Override
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62 public CiConstant constantValue(CiConstant receiver) {
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63 if (receiver == null) {
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64 if (constant == null && holder.isResolved() && holder.isSubtypeOf(compiler.getVMEntries().getType(C1XOptions.class))) {
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65 Field f;
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66 try {
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67 f = C1XOptions.class.getField(name);
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68 } catch (SecurityException e1) {
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69 return null;
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70 } catch (NoSuchFieldException e1) {
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71 return null;
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72 }
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73 f.setAccessible(true);
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74 if (Modifier.isStatic(f.getModifiers())) {
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75 CiKind kind = CiKind.fromJavaClass(f.getType());
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76 Object value;
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77 try {
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78 value = f.get(null);
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79 } catch (IllegalArgumentException e) {
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80 return null;
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81 } catch (IllegalAccessException e) {
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82 return null;
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83 }
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84 constant = CiConstant.forBoxed(kind, value);
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85 }
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86 }
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87
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88 // Constant part only valid for static fields.
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89 return constant;
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90 }
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91 return null;
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92 }
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93
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94 @Override
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95 public RiType holder() {
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96 return holder;
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97 }
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98
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99 @Override
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100 public boolean equals(Object obj) {
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101 if (obj instanceof HotSpotField) {
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102 HotSpotField other = (HotSpotField) obj;
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103 return other.offset == offset && other.holder.equals(holder());
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104 }
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105 return false;
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106 }
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107
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108 @Override
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109 public boolean isResolved() {
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110 return offset != -1;
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111 }
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112
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113 @Override
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114 public CiKind kind() {
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115 return type().kind();
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116 }
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117
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118 @Override
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119 public String name() {
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120 return name;
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121 }
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122
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123 @Override
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124 public RiType type() {
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125 return type;
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126 }
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127
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128 public int offset() {
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129 return offset;
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130 }
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131
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132 @Override
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133 public String toString() {
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134 return "HotSpotField<" + holder.name() + "." + name + ">";
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135 }
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136
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137 }